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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

why do we have another cartridge filled with oil fitted at the bottom silica gel cartridge in power transforers

1 2459

why transformer rating is mentioned in kva?

JK Electric Works,

1 3359

what is the formulae of calculating voltage drop?

2 3541

High Voltage out door substation-annual maintenance, things to be considered

1 3043

How much current can a 3-1/2 core 100 mm wire carry?

Epitome, Focus, Focus Energy,

3 30784

1 hp single phase motor is more likely to get hot thsn inone hp 3 phase motor its true or false? If true why?

Focus, Focus Energy,

3 22559

Whis machine is having higher efficiency Transformer or Generator

2 3334

What is the latest generation of circuit breakers called?

Epitome, Focus Energy, Jakson, KDC, L&T,

3 21428

What are the special cables required for explosion proof wiring?

IVRCL,

2 15182

What is the similarity and what is the difference between relays and PLC?

NTPC,

3 26240

The company is wiling to buy you 5 pcs of equipments in your electrical tool kit. Plz tell what are the 5 things you want?

3 22985

Suppose an electric motor with a controller is not working. What is the sequence of testing you will do in your troubleshooting?

Emerson,

2 22949

how the BDV of the oil will be checked using moterised controled HV SET?

1 2636

What is an Isolation Transformer? Where it will use?

3 3829

What is the latest generation of circuit breakers called?

Focus, OPTCL,

1 4866


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Un-Answered Questions { Electrical Engineering }

fuel-air ratio in a petrol engine fitted with suction carburettor,operating with dirty air filter as compared to clean filter will be

460


What are the basic properties of signal flow graph?

525


What is the mechanism of WTI

1185


i am going to give the JSEB,RANCHI exam for power plant,so i need some samples of papers related to that,so please send me these papers by my mail id.

2843


How vfd saving power.

1284






How to select transmission line type (i.e. 11kv or 33kv) for new established industries

1428


why are distributed windings generally used in alternators?

2103


how to calculate slip ring induction motor stator and rotor currents??

1488


Please clarify, 1. Is it required to lay two runs of GI wire along with Armoured LT cable if it is laid between one big mains (63Amps TPN SDF) to small main (32A TPN SDF) with proper glanding termination? 2. If the armoured cable with proper glanding is laid from DB to CNC machine, is it required to run two runs of body earthing to the Machine from DB? 3.If the armoured cable with proper glanding is laid from Substation to Hangar, distance is approx. 100 mtrs, is it required to do earthing at shop area though the primary termination at substation is earthed through gland.

1400


What is the main use of rotary phase converter ?

473


what happen if field of dc shunt motor opens? what is function of putting res. in parallel to one phase of 3 phase IM? the power supplied by 5A source in circuit is given by------Watt.

1397


what are the assumptions made in swineburne's test?

1499


what is alluminium arm in ab conductors

1342


how u measure/calculate renge of capacitor,capacitor has no any rating tag.what is the theory of measure of capacitons.

1371


Compare jfet’s and mosfet’s.

533